Typewriting machine



NOV. 6, v J. A. B. SMITH TYPEWRITING MACHINE Filed May 12, 1926 2 Sheets-$heet 1 or I 72 10,)6 7

Nov. 6, 1928.

J. A, B. SMITH TYPEWRITING MACHINE Filed May 12, 1926 2 Sheets-Sheet 2 thereof into the machine Patented Nov. 6, 1928.

UNITED STATES PATENT OFFICE.

asten JESSE A. B. SMITH, F STAMFORD, CONNECTICUT, ASSIG-ITOR TO UNDERWOOD ELLIOTT FISHER COMPANY, OF NEVT YORK, N. Y., A CORPORATION OF. DELAWARE.

TYPEWBITING' MACHINE.

Application filed May i tCl'l carrying carbon-sheets interleaved with its web-form.

lVheii the lower web-form of a set is in the leading end of the idle upper webijorn'r can be readily folded back over the upper carbon-carrier out of the way; but it is sometimes difficult and tedious for the u skilled operator to thread theleading free end of the lower web compactly back through the lower carbon-carrier to the inactive posii: iion, when the upper webform is to V be used.

An object of the present invention. is to p Wide an improved construction. whereby, when it is desired to employ onlythe upper web, the operator may withdraw the lower web from the platen and fold or turn it back its carbon-carrier out of the wa easily and in a minimum of time.

At the rear of the machine the webs hang '1 contact one with the other, and in this relation the idle web, through friction, tends to interfere with the feeding of the active web into the machine. Moreover, when the tow-fr web is not'in use and is folded back to the inactive position, its free end will in some ir tances strike the hanging upper web at each back movement of the carbon-carrier, when stripping the carbons prior to starting the typing of a new form; and this contact of the end of the lower web with the incoming upper web also impedes or interferes with the feeding action of the. machine,

causin an ob'ectionable dra on the laten. 2D 29 Another feature of the present invention the provision at the rear of the machine of a drop or chute to receive the turned back 7 free end of the lower work-form, so that it will. not come in contact with the active upper web nor interfere w th the feeding There is herein disclosed a novel construction whereby the free end of the lower workform of a set may be expeditiously deposited on and over its carbon-carrier, to

, permit the upper web-form to be typed upon,

1924:, No. 1,503,064, in which two fan-fold a web-forms areinterchangeably employed in 1928. Serial No. 108,451.

and further to provide, at the rear of the machine, a drop to receive the free end of the lower web-form when the carbon-carrier isforced or moved backwardly when stripping the carbons prior to beginning a new typii'igoperation on the active web A feature of the invention resides in the construction of the double carbon-carrier, whereby the operator maymove the uppercarbon-carrierout of the way so that the lower work-web may be folded back when the upper web is to be typed upon, the carriers being separable, that is, the upper carrier may be lifted bodily'from the sup ports, or it may be tilted or swung upwardly on two of itss'upporting posts which are provided with hooks to retain and guide the carrier as it is being lowered to the normal horizontal position.

A further feature of the invention is the provision of an adjustable rearwardlyextending bracket carried on the work-frame at the rear of the machine and which is constituted by parallel backwardly-ranging arms connected by widely-spaced guide-bars over which the work-webs are fe into the machine, the space between these'work-webs forming a drop for the b'aclrturned-end of the lower web when the upper web is inuse. The manner of mounting the upper carbon-carrier permits its quick removal from the machine with its work-web and inter leaved carbons and the substitution of another work-web in its stead when desired. Other features and advantages will'hereinafter appear. i

In the accompanying drawings, V p

Figure l is a central longitudinal sectional elevation of the machine showing a set" of relatively separable superposed carbonoarriers and an adjustable bracket for guid- 5 is mounted in a carriage 6 to the rear of which is a work-frame 7. The usual feedrolls 8 assist the platen in feeding one. of the sets of work-webs 9, 9 around the platen in the Operation of the machine.

Mounted on the work-frame 7 is a carriage 10, including a bed-plate 11, carrying rollers 12 which have rolling contact with supporting rails 13 on the work-frame. On the carriage is mounted a set of two sugiierposcd carbon-carriers 1 1 and 15, each including a base-plate 16 and 17 respectively, on which are carried stepped blocks 18 and 19, arranged in pairs and which support the usual carbon-blades 20, to which the usual carbon-sheets 21 are connected.

The base-plate 16 of the lowercarbon-carrier 14L is detachably connected to the bedplate 11 of the carriage in the usual wellknown manner as at 22 and carries, preterably near its corners, at opposite sides of the machine, vertical posts or supports 23 and 24 also arranged in pairs. The posts 28 are reduced at the top to form pins 25 which pass freely through apertures 26 in the base-plate 17 of the upper carbon-can rier 15. The posts E l are also reduced at the top but are extended to form hooks or curved portions 27 which are received freely in apertures 2-8 also in the base-plate 17. The reduced pins 25 and hooks 27 provide shoulders 29 and 30 on the respective pairs of posts to support the uppercarben-carrier in the normal horizontal position. In the preferred operation, to facilitate provid ing a space between-the upper and lower carbonrarriers for turning back the lower work-web on its carrier, the upper carrier is tilted or swung upwardly by pressing down on the handle 31, the shoulders 30 providing the fulcrum on which it swings. The books :27, being curved substantially on the are of the swing. act to prevent said movement or displacement oi the upraised carrier, so that when said carrier is lowered, the pins 25 on posts 23 will be in registration with the apertures 26.

Of course, as hereinbefore st I per carbon-carrier, with its web, may be littedfbodily from the machine or its supportingposts if desired, to provide the desired space for the ,backturn of the lower web but thiswould require more time and labor in replacing it on the pins and hooks and is not desirable, as speed is a desideratum. i

Mounted at the rear of the machine, in verticallynrranged.posts on the work-frame 7, is a cross-bar or guide over which the lower web is drawn into the machine and on which are the usual eenterii guides for centering the web in its travel to the platen. Supported on the extended ends oi the bar or guide 33, are backwardly-directed arms connectedat their tree'endsby a cross-bar or ated, the upguide 36 over which the upper web'l'orm is drawn into the machine and on which are centering guides 37 similar to the guides 3d. Th guides are all adjusts le why on their respective bars and are held in a desired position by screws 38 or the like.

The arms and cross-bar 86 collectively constitute a bracket or guide torsupporting and guiding the upper work-form, said bracket or guide being adjustably mounted on the guide-bar and held at a desired angle to the horizontal by set screws 39 or the like. The guide-bars 33 and 36 are preferably widely separated. The space between the hanging lower and upper workwebs constitutes a drop 40 to receive the backturned free end 9 c1t said lower web when the carbon-carriers are moved back by forcing the usual puslrbar, indicated at 11, rearwardly of the machine when stripping the carbons in the upper work-web prior to typing a new form. v

V The advantages resulting from the use of the machine as above described will readily be apparent. As pointed out above, the operator has but to tilt the upper carrier on the curved hooks 01' hinge-pins 27 to provide an enlarged space wherein to fold back the tree leading or forward ends of the lower group of worksheets, thereby avoiding the painstaking and time-consuming operation of threading saidlleading or forward ends through the narrow space between the superposed carbon carriers. These reverselyturned free ends are thrown back to drop into the chute or drop 10, the weight of these free ends tending to keep the forward ly-extending loop shown at 9 of minimum size, thereby preventing curling and creasing of the sheets at this loop as the carrier reaches the limit of its movement toward the platen. The reversed free ends will tend to occupy the s ace between the groups o't sheets 9 and 9*, shown at the left of Figure 1, out otcontact with said sheets, particularly with sheets 9. T is an important advantage, since there is relative motion be tween the free ends 9 and sheets 9 during the reciprocating motion of the carbon-carriers, and if frictional contact between them were not prevented, curling, snarling and launching of the free ends would result.

Variations may be resorted to within the scope of the invention and portions of the improvements maybe used without others.

.l-laving thus described my invention I claim:

1. In a typewriting machine of the class described, a set of relatively separable carbon-carriers arranged one over the other, and means on the lower carrier for supporting the upper one, said supporting means being provided with extensions to engage the upper carrier to permit tilting movement thereof on said supporting means.

' sheets.

2. In a typewritingmachine of the class described, a set of relatively separable carbon-carriers arranged in superposed relation, and a plurality of postson the lower carrier, said posts having shoulders to support the upper carrier, some of said post-s having hooks to coact with the upper carrier and permit tilting movement thereof.

3. In a typewriting machine of the class described, a set of superposed relatively separable carbon-carriers, each carrier including a base-plateand a set of carboncarrying blades, posts arranged on the base plate of the lower carrier, said posts having reduced top extensions and shoulders, some of said extensions being prolonged and curved, the base-plate-of the upper carrier being provided with apertures to loosely receive said extensions,'and a handle carried by the uppercarrier; 1

, 4. In a typewri'ting machineof the class described, a set of superposed relatively separable carbon-carriers,-each carrier including a base-plate and a set of carbon-carrying blades, posts carried by and arrangedin pairs at opposite sides of the lower baseplate,.said posts having shoulders and extensions passing through apertures in the upper base-plate, the extensions of the posts at one side of the carrier being prolonged and curved outwardly, and a handle on the upper carrier. a

5. In a typewriting machine having a platen, in combination with feed-roll mechanism to feed a pluralityof superposed groups of work-sheets interleaved with carbons successively or alternately around said platen, a set of carbon-carriers, each carrier being composed of a plurality of carbonholding blades, said carriers being so arranged as to provide a space between adjacent carriers to permit the reverse threading therethrough of the forward portion of a lower group of work-sheets, and paperguiding means so arranged as to afford an unobstructed drop located rearwardly of the carbon-carriers toreceive said forward por tion as the latter falls by gravity therein as said carriers are movedrearwardly during carbon stripping of the upper group of work-sheets, said drop preventing contact between the, relatively moving groups of 6, In' a machine of the class described having a platen and feed-roll mechanism to feed a plurality of superposed groupsvof work-sheets interleaved with carbons successively or alternately around said platen, the combination of a set of carbon-carriers, each carrier being composed of a plurality of carbon-holding blades, said carriers being so arranged as to provide a space between adjacent carriers to permit the reverse threading therethrough of the forward portion of a lower group of work-sheets, and

-8. As a unitary structure, a plurality of" superposed carbon-carriers, each composed of one or more carbonhold1ng blades, ads acent carriers being so connected as to perunit both tilting movementofan upper carrier with respect to a lower one and com I plete separation of the same. l 1

9. In a typ ewriting machine of the class described having at the rear thereof a source of supply for a pair of work-webs, each web composed of a number of plies, and a bedplate mounted. for reciprocation at the rear of the platen and transversely thereto, a pair a of superposed carbon-carriers having car:

bons arranged to be interleaved with the pliesof the work-webs, the lower web when idle being tucked back in aloose reverse fold between the carbon-carriers, andantifouling means for preventing frictional contact between the upper web andthe relatively moving reversely folded lower web during carbon-stripping of the upper web, said means including an unobstructed drop or chute of Vsufficientwidth to enable the free'end of the reversely folded lower web to fall downwardly of its own weight without contacting the plies of said upper web, said carbon-carriers being detachable with their lOO webs from said bed plate and from each other for replacement with other carriers having different webs of forms, and the lower carrier-being removable with its web rearwardly through said drop;

10. In a typewriting machinelof the class described having at the rear thereof a source of supply for a pair ofwork-webs, each web composed of anulnber of plies, and a bed:

plate mounted for reciprocation at the rear of the platen and transversely thereto, a

pair .of superposed carbon-carriers having carbons arranged to beginterleaved with the pliesof-the work-webs, the lower web when idle being tucked back in a loose reverse foldfbetween the'carbon-carriers, and antifouling means for preventing frictional contact between the upper web and the relatively moving reversely folded. lower web during carbons-stripping of the upper web, said means including an unobstructed drop or chute of suflicientwidth to enable the free end of the reversely folded lower webto fall downwardly of its own weight without contacting the plies of said upper web, said .drop or chute defined by horizontally and verti-. cally spaced guide-bars over which the webs are directed from the source of supply to the carbon-carriers, said carbon-carriers being detachable with their webs from said bed-plate and from each other for replacement with other carriers having different webs of forms, and-thelower carrier being removable with its web rearwardly through said drop.

11. In a typewriting machine of the class described having at the rear thereof a source of supply for a pair of work-webs, each web composed of a number of plies, and a bedplate mounted for reciprocation at the rear of the platen and transversely thereto, a pair of superposed carbon'carriers having carbons arranged to be interleaved with the plies of the work-webs, the lower web when idle being tucked back in a loose reverse fold between the carbomcarriers, andanti-fouling means for preventing frictional contact between the upper web and the relatively moving reversely folded lower web during carbon stripping of the upper web, said means including an unobstructed drop or chute of sufficient width to enable the free end of the reversely folded lower web to fall downwardly of its own weight without contaeting the plies of said upper web, said carhon-carriers being detachable with their webs from,said bed-plate and from each other for replacement with othei" carriers having 'diflerent webs of'forms and the lower carrier beingremovable with its web rearwardly through said drop, said upper carrier being also hingedly supported on said lower carrier whereby the former may be tilted away from the latter temporarily to increase the space therebetween to facilitate the rearward looping of the leading end of the idle lower web toward said drop.

12. In a typewriting machine of the class described having at the rear thereof a source of'supply for a pair of work-Webs, each web composed of a number of plies, and a bedplate mounted for reciprocation at the rear of the platen and transversely thereto, a

pair of superposed carbon-carriershaving carbons arranged to be interleaved withthe plies of the work-webs, the lower web when idle being tucked back in a loose reverse fold between the carbon-carriers, and anti.- fouling means for preventing frictional contact between the upper web and the relatively moving reversely folded lower web during carbon-stripping of the upper. web, said means including an unobstructed drop or chute of sullicient'width to enable the free end of the reversely folded lower web to fall downwardly of its own weight without contacting the plies of said upper web, said carbon-carriers being detachable with their webs from said, bed-plate and from each other for replacement WlLll other carriers having different webs of forms and the lower carrier being removable with its web rearwardly through said drop, said upper carrier being also hingedly supported on said lower carrier whereby the former may be titled away from the latter temporarily; to. increase the space therebetwecn to facilitate the rearward looping of the leading end of the idle lower web toward said drop, said hinged-support including hooked pins for releasably and pivotally connecting the upper carrier on the lower and also serving to locate it thereon.

13. In a typewriting machine of the class described having at the rear thereof a source of supply for a'pair of work-webs, each web composed of a number of plies, and a bed-platemounted for reciprocation at the rear of the platen and transversely thereto, a pair of superposed carbon-carriers having carbons arranged to be interleaved withzthe plies of the work-webs, the lower web when idle being tucked back in a loose reverse fold between the carbon-carriers, and anti fouling means for preventing frictional contact between the upper web and the relatively moving reversely folded lower web during carbon-stripping of the upper web, said means including an unobstructed drop or chute'of sufficient width to enable the free end of the reversely folded lower web to fall downwardly of its own weight without contacting the plies of said upper web, said carbon-carriers being detachable with their webs from said bed-plate and from each other for replacement with other carriers having different webs of forms and the lower carrier being: removable with its web rearwardly through said drop, said upper carrier being also hingedly and removably supported onsaid lower carrier to one side of the line of travel, whereby the former may betilted away from the latter temporarily'to increase the space thercbctween to facilitate the rearward looping of the leading end of the idle'lower web toward said drop.

' JESSE A. B'SMITH. 

